Yes, and they use as propellants nitrogen tetroxide and unsymmetric-dimethylhydrazine whereas the Shuttle's OMS and RCS burn monomethyl hydrazine and nitrogen tetroxide.

Our you suggesting NASA will use Russian rocket engines for USA manned spacecraft? I doubt it and I don't think it would be reasonable to expect ISRU fuels then.

They will either use Shuttle derived systems (AKA OMS and RCS) or Lox/H2 systems. Neither of which will function over months and require a human on board to maintain (NASA rules?). The Lox/H2 system could be made to use ISRU but with the dropping of Methane I don't think that will remain a rational for the missions anymore. This is just becoming and other exercise in making camels instead of a horses!

The rational that this waste of money return to the Moon BS was to build technologies and train for futher explortations Mars and Beyond are thrown out the window with this choice. I'm not going to sit around and wait for 25 years for what is clearly not part of this plan!